baber/WOPTO huggingface dataset:
Patent GB-963402-A (GB)
Title: A method of driving tunnels in rock
IPC: E21D11/10
Filed: 1961-02-28
Abstract: 963,402. Rock stabilization. SKANSKA CEMENTGJUTERIET A.B. Feb. 28, 1961 [March 4, 1960], No. 7370/61. Heading E1F. The newly exposed roof formed on blasting the head of a tunnel is stabilized by being coated with cement before the rubble freed from the head by the explosion is removed. One or more coatings of cement can be applied to the roof, the first coating preferably being a quick setting cement. The cement can be applied by the apparatus of the referred Specification 963,403.
Patent GB-571340-A (GB)
Title: Improvements in or relating to dicyandiamide salts and methods of preparing same
IPC: C01C3/16
Filed: 1943-05-10
Abstract: 571,340. Alkali and alkaline earth metal salts of dicyandiamide. AMERICAN CYANAMID CO. May 10, 1943, No. 7373. Convention date, April 28, 1942. [Class 1 (ii)] Alkali and alkaline earth metal salts of dicyandiamide are prepared by reacting alkali or alkaline earth metal hydroxides (other than calcium) with dicyandiamide in the presence of water. Preferably, the less soluble reactant, in a finely divided form, is added to a solution of the more soluble reactant. The reaction may be conducted at elevated temperatures not exceeding 80C. Cooling or the presence of excess of the hydroxide may be employed to aid crystallization. The aqueous reaction media may also contain ethyl or methyl alcohol and the resulting crystals may be washed free from alkali by means of a little cold water, acetone, ether, alcohol or butanol. Examples describe the preparation of the potassium, sodium, lithium barium and strontium salts. The products may be used to impart colour to flaming pyrotechnic compositions or as intermediates in the preparation of a acyl dicyandiamides. They can also be used as intermediates in the preparation of dyes, resins or flame proofing compounds.
Patent GB-197302-A (GB)
Title: Improvements in or relating to processes and apparatus for the separation of the constituents of gaseous mixtures
IPC: F25J3/04
Filed: 1923-03-14
Abstract: 197,302. Soc. l'Air Liquide, Soc. Anon. pour l'Etude et I'Exploitation des ProcÚdÚs G. Claude. May 8, 1922, [Convention date]. Fluid-actuated gears; magnetic gears.-In the reparation of the constituents of a gaseous mixture by liquefaction and rectification, the expansion cylinder is formed with an annular rectification chamber surrounding it, and the admission and exhaust of gas to and from the cylinder may be effected by a valve actuated by pneumatic or electromagnetic means or a combination of both. Fig. 2 shows pneumatic means for the control of the distributor of a single-acting expander which is formed with an annular groove n and a recess o at the end adapted to receive, the end of an adjustable screw V constituting with it a damping device for the valve. Compressed air is admitted from the inlet I to either end of the distributing- valve alternately by the action of valves t, t<1> actuated by the piston at the ends of its strokes and returned by springs. The pipe system connected with the valves also leads to the outlet K from the cylinder and is provided with an adjustable escape-valve, at the point f. In a pneumatic control system for a double-acting cylinder, the distributing-valve is provided with a pneumatic buffer at one end, and the passage of air to actuate, the valve is controlled by grooves in the piston which coact with pipe inlets and outlets on opposite sides of the cylinder wall. Fig. 9 shows the distribution valve actuated by solenoids S', S<2>, S<3> coiled around the non-magnetic cylinder containing the valve, the contacts being made by spring buffers t, t<1> actuated by the piston at the ends of the stroke, and by a lever l supported by leaf springs r<1>, r<2> and actuated by a projection on the piston-rod.
Patent GB-850566-A (GB)
Title: Improvements in or relating to the manufacture of tubing
IPC: B21C37/10
Filed: 1959-03-04
Abstract: 850,566. Making longitudinally-seamed tubing; bending. BUNDY TUBING CO. March 4, 1959 [March 5, 1958], No. 7469/59. Classes 83 (2) and 83 (4). [Also in Group XXVIII] A method of forming tubing comprises moving a metal strip lengthwise and while so moving it bending up the side portions and bringing the edges towards each other, to generally tubular form, lapping one side edge over the other and wrapping one half of the strip around the other until the side edges are adjacent opposite faces of the centre of the strip. Flat metal strip 11 from a coil 12 passes through a series of forming rolls which fashion the strip transversely to form tubing 13 which passes through a furnace 14 for sealing and bonding the interfaces and then through a cooling jacket 15. Rolls 20 bevel the edges of the strip at 39, 40, rolls 21 bend the edges of the strip up at 41, 42 to approximately the radius of curvature of the tubing to be formed and rolls 22, 23, 24, 25 and 26 bend up intermediate portions 43, 44 of the strip until it assumes generally tubular form with the side edges in a common plane P. The rolls 22 may also form the centre of the strip with a step 46. Rolls 27, 28 lap the side portion 42 of the strip over the side portion 41, rolls 29, 30, 31 continue the wrapping, decreasing the radius of curvature of the tubular form, and rolls 32, 33 further constrict the wrapped halves and set the bevelled edges on the step 46, Fig. 7. A mandrel 35, on a rod 36 inserted into the partially formed tube as at 37 before the tubular form is closed, may be used in the tube interior between the finishing rolls 32 and 33. U.S.A. Specification 2,292,810 is referred to.
Patent GB-577720-A (GB)
Title: Improvements relating to apparatus for heating insulating material by subjecting it to a high frequency field of electric force
IPC: B29C33/08
Filed: 1944-04-22
Abstract: In moulding &c. apparatus for heat- and pressure-treating thermoplastic or thermosetting insulating material by a high-frequency electric field, the electrodes have a composite facing consisting of an inner layer of high-loss inorganic insulating material having an open fibrous structure such as woven glass fabric or a felted fabric of glass, asbestos or slag wool, and an outer layer of high-loss, heat-stable, insulating material having a non-fibrous structure such as a resin of the phenol-, cresol-, melamine-, or urea-formaldehyde type, or of polyvinylidene chloride where it is not plasticised by the heated material.  The outer layer preferably has a thickness of the order of 0.01 inches, and the fabric layer of the order of 0.03 inches.
Patent GB-331899-A (GB)
Title: Improvements in two-stroke cycle internal combustion engines
IPC: F02B25/00
Filed: 1929-03-08
Abstract: 331,899. Schl³pmann, H. March 8, 1929. Cylinders, admission ports of.-Air or combustible mixture is supplied by a pump driven independently of the engine piston to a chamber 49 in the cylinder head; it is admitted to the combustion chamber through ports 54 formed in a tubular extension to the piston. In a multi-cylinder engine the chamber 49 is common to all the cylinders.
Patent GB-274161-A (GB)
Title: Improvements in and relating to tobacco stripping machines
IPC: A24B5/12
Filed: 1926-03-19
Abstract: 274,161. Phillips, M. G. P. March 19, 1926. Addition to 255,156. Tobacco.-A stripping machine in accordance with the parent Specification is provided with means for enabling the effectively stripped leaves to be collected in one receptacle and those having broken stems or ineffectively dealt with by the strippers or grippers to be delivered into another receptacle. The carriage 3 carrying the stripping device moves on rails 1 and the movable member 3<a> of the stripping device is attached by brackets 2<a> to levers 3<b> pivoted on the carriage. Secured to the inner faces of the brackets 2<a> are brackets 4, 4<a> supporting an inclined plate 5 running across the machine. A properly stripped leaf falls between the plate 5 and the stripper into a suitable receptacle, but a broken or incompletely stripped leaf falls from the front of the plate 5 into another receptacle. The plate is arranged not to foul the feed belt 6 for the leaves when the stripper is in its extreme position, and may be provided with a rotary brush on its inner edge to assist the passage of the leaf. In modifications, (1) the brackets 4 are mounted on the carriage 3, and the plate 5 may be carried by arms pivoted on the carriage and raised and lowered at the desired moments by rollers engaging cam surfaces on the rails; (2) the plate 5 is independent of the stripper and carried by brackets secured to the frame of the machine; (3) the plate 5 is a partition in a receptacle for the tobacco leaves, and its upper edge may be provided with a yieldingly mounted flap normally projecting into the path of the stripper and gripper,
Patent GB-885452-A (GB)
Title: New monoazo dyestuff pigments containing n-pyrenyl-acylamino groups and their manufacture and use
IPC: C09B43/32
Filed: 1959-03-05
Abstract: Polyvinyl chloride is coloured in blue to red shades by incorporating therein a monoazo dyestuff free from sulphonic or carboxylic acid groups or sulphonamide groups of formula <FORM:0885452/IV (a)/1> wherein R1 is a benzene residue bound in the 1-positio to the azo linkage and in the 5-position to the carbonyl group, containing in the 2-position an alkoxy group, R2 is a naphthalene residue in which the azo linkage, the hydroxyl group and the - CONH Pyr group are in 1 : 2 : 3-position relatively to one another and Pyr is a pyrene residue (see Group IV(c)).  In an example a pigment of the above formula wherein the alkoxy group in R1 is methoxy is added to a mixture of polyvinyl chloride and dioctyl phthalate and the mixture is rolled to give a ruby-coloured foil.  Specification 820,444 is referred to.ALSO:The invention comprises monoazo dyestuffs free from sulphonic or carboxylic acid groups or sulphonamide groups of formula <FORM:0885452/IV (c)/1> wherein R1 is a benzene residue bound in the 1-position to the azo linkage and in the 5-position to the carbonyl group, and containing in the 2-position an alkoxy group, and R2 is a naphthalene residue in which the azo linkage, the hydroxyl group and the -CONHPyr group are in 1 : 2 : 3-position relatively to one another and Pyr is a pyrene residue.  They are prepared by reacting a dicarboxylic acid halide of formula <FORM:0885452/IV (c)/2> with an aminopyrene.  The acid halides may be prepared by treating the corresponding azo dyestuff dicarboxylic acids with phosphorus halides or oxyhalides or with thionyl chloride in the presence of inert solvents such as chlorobenzenes, toluene, xylene or nitrobenzene. The dyestuffs are blue to bordeaux coloured pigments and are used to colour compounds such as polymers, cellulose derivatives and rubber. In an example the dyestuff 3-amino-4-methoxybenzoic acid 2 : 3-hydroxynaphthoic acid is converted into the corresponding acid chloride by the process described in Specification 820,444 and the acid chloride is reacted with 3-aminopyrene in o-dichlorobenzene solution and in the presence of pyridine.  Alternative reactants specified are 3-amino-4-ethoxybenzoic acid and 6-bromo-2 : 3-hydroxynaphthoic acid.
Patent GB-431455-A (GB)
Title: Improvements in or relating to thermionic oscillation generators
IPC: H03B5/10
Filed: 1935-03-12
Abstract: 431,455. Valve generating circuits. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL, 79, Boulevard Haussmann, Paris. March 12, 1935, No. 7723. Convention date, March 22, 1934. [Class 40 (v)] The frequency of a back - coupled oscillator of the type employing a tuned plate circuit L, C is rendered independent of the valve parameters by inserting a capacity C 1 in the grid lead and a coil L2 in the plate lead. The grid-filament path is shunted by a resistance R1 and the capacity C1 is chosen so that the phase of the grid voltage is the same as if the grid-filament resistance were infinite. With this object in view C1 is chosen so that C1, L1 forms a series circuit resonant at the operating frequency determined by C, L. The coil L2 in the plate connection has an inductance equal to that of the coil L. The Specification gives formulae indicating what alteration of the value of L2 is necessary to allow for (a) a resistance r2 in the capacity branch of the tuned circuit L, C ; (b) a capacity C<1> between the grid and plate of the valve ; (c) a capacity C" between the coils L, L1. The grid connection may include the usual grid leak R and condenser K, and the valve may be of the screen-grid type.
Patent GB-312720-A (GB)
Title: Improvements in or relating to electrically propelled locomotives and trains
IPC: B60L15/00
Filed: 1928-03-13
Abstract: 312,720. Higgs, G. R., and Associated Electrical Industries, Ltd. March 13, 1928. Switching systems.-Where two alternately' usable pantographs or trolley poles are provided on an electric locomotive or train with two motive equipments, a switching arrangement enables either collector to supply either or both motive equipments and earthing switch-gear is also provided. Two switches a, d are connected in series with collector p<1> and motor 1 and two switches c, e are similarly connected to collector p<2> and motor 2 the motors 1, 2 being arranged as usual for series parallel control. A removable link or switch b connects the junction points of the pairs of switches and a double pole switch f or its equivalent is connected as shown for earthing purposes. On a fault occuring on either pantograph or motive equipment the sound collector and motor may be used to drive the train by manipulation of the switches provided. The pairs of switches may be housed in separate chambers, the door or doors to which may be interlocked with the earthing switch or switches. The compartments may be connected by a passage so arranged that one compartment can only be reached through the door to the other and through the passage. Specifications 234,571, 308,002, 313,427 and 314,107, [all in Class 79 (iii), Motor vehicles, Arrangement &c. of parts of], are referred to.
Patent GB-219357-A (GB)
Title: An improved wringing and mangling machine
IPC: D06F45/00
Filed: 1923-12-17
Abstract: 219,357. Alexander, D. F. Dec. 17, 1923. Folding mangles and wringers. -A framework b<2> carrying the rollers B is pivotally mounted at b<3> in the frame of a kitchen table so that it may be turned up as shown for wringing or turned down to lie horizontally for mangling or for stowing. In the latter position, the clothes are received after mangling by an inclined guide board a<7>. A pair of swivelled brackets a<1> having thumb screws a<3> serve to hold the framework in either position and a drainboard a<4> is also provided. The washing-machine described in Specification 219,356 may be incorporated in the table, as shown at E.
Patent GB-608287-A (GB)
Title: Improvements in or relating to epicyclic gearing
IPC: F16H3/78
Filed: 1946-03-12
Abstract: 608,287. Reversing-gearing. BROCKHOUSE ENGINEERING (SOUTHPORT), Ltd., and GATISS, A. L. March 12, 1946, No. 7768. [Class 80 (ii)] In an epicyclic reversing gearing, adapted to be driven through a transmission which transmits some torque, even when the prime mover is idling, and which has no positive connection between the input and output shafts of the transmission, the reaction element of the gearing carries a dog-clutch sleeve slidable from a neutral to a gear-drive position, the sliding being accompanied by frictional retardation of the sleeve before it engages its corresponding dog-teeth and positive means to prevent such engagement until the two sets of teeth are substantially synchronised, rotation of the sleeve being permitted after engagement has taken place.. The driving shaft 10 is driven from the prime mover through a hydraulic coupling, and rotationally connected to a sun-gear 15 meshing with planet-gears 16 mounted on the planet carrier 18, which gears in turn mesh with an annulus 22 rigid with the driven shaft 21. The periphery of the planet carrier 18 is splined to drivingly engage a dog-clutch sleeve 25, having dogs 26 adapted for engagement with dogs 27 on the annulus 22 for direct drive, and axially spring-loaded dogs 29 for reverse drive. A multi-plate clutch 60 is interposed between the driving sun 15 and an annular portion of a clutch pressure plate 66, this portion being connected, with circumferential clearance by slots 78 and studs 77, to the sleeve 25. The pressure plate 66 has axially extensions 71 projecting into openings 72 in the sleeve 25, the extensions and openings being bevelled forwardly in relation to the direction of rotation of the shaft 10 as shown in Fig. 2. Engagement of the direct drive is effected by moving the sleeve 25 axially by the lever 43 on shaft .41, which may be actuated as described in Specification 608,288, the sloping edges of the openings 72 and extensions 71 co-operate to move the pressure plate axially to engage the clutch 60, and the gear is thus brought to rest against the hydraulic drag. If the torque due to the drag is high, the anti-clockwise turning of the plate 66 to allow the extensions 71 through the openings 72 will be prevented by the engagement of the sloping faces, but if the drag torque is low, the plate 66 will rotate backwards slightly and allow the sleeve to move axially for the engagement of the dogs. Thus, engagement is prevented at all speeds where there is relative rotation between the dog teeth. Engagement of reverse is produced by further sliding of the sleeve 25 into engagement with the dog teeth 29, there being insufficient clearance for a neutral position between the teeth 27 and 29. If the teeth 26, 29 meet end-on the teeth 29 move axially against the springs until the teeth 26 have disengaged from the teeth 27 of the stationary annulus, whereupon the drag causes a slight rotation of the sleeve 25 and the dog teeth engage under the axial spring pressure.
Patent GB-874342-A (GB)
Title: Jet ignition for mercury-vapour current converters
IPC: H01J13/34
Filed: 1960-03-04
Abstract: 874,342. Metal-vapour converters. BROWN, BOVERI & CIE A.G. March 4, 1960 [March 4, 1959], No. 7813/60. Class 39(1). A jet igniter for a mercury arc current converter in which an iron core 6 actuated by an electromagnet 5 forces mercury through a nozzle 4 and hence from the mercury cathode on to the ignition anode 3 has the casing 7 in which the iron core is located floating in the mercury in order to avoid the transmission of shocks to the rigid casing 1. The upper end of the floating casing 7 abuts against the adjustable pin 8. The mercury below the openings 9 in the casing 7 damps movement of the iron core.
Patent GB-859448-A (GB)
Title: Improvements in or relating to metallising
IPC: C23C18/40
Filed: 1958-03-11
Abstract: 859,448. Coating with metals. PILKINGTON BROS. Ltd., KAY, S. E., and BALL, R. J. March 4, 1959 [March 11, 1958], No. 7822/58 Class 82(2) [Also in Group XXIX] A process of depositing metal upon a surface comprises injecting a metal depositing solution and a reducing solution into a mixing chamber at controlled rates, intimately mixing the streams within the chamber and expelling the solution from the chamber to the surface before appreciable reduction of the metal has occurred. As shown, the two solutions are supplied through conduits 12 to unions 11, the rates of flow being controlled by the sizes of nozzles 14 in jet members 9 and by the back pressure created in chamber 1 by compressed air supplied via conduit 18. The mixed solutions form a shallow pool 19 covering the top surface of wad 4 of stainless steel wool, through which the mixture is forced to delivery orifice 6 and to the treated surface 22. In a modification the wad 4 may be replaced by a bed of small glass balls. A complex silver ammonia or copper ammonia solution may be used in combination with a reducing solution.
Patent GB-739962-A (GB)
Title: Improvements in coaxial conductor electric cables
IPC: H01B3/00
Filed: 1954-03-19
Abstract: An electrically conducting polyethylene composition comprises the following ingredients: ..Per cent ..by weight .Polyethylene.10-40 .Polyisobutylene.20-60 .Acetylene black.25-50 .Stearic acid.0-5 .Microcrystalline wax.0-5  In a preferred embodiment the proportions are: ..Per cent .Polyethylene.19 .Polyisobutylene.38 .Acetylene black.36 .Stearic acid.4 .Microcrystalline wax.3 The polyisobutylene preferably has a molecular weight of about 100,000, and the acetylene black may be replaced by other finely divided carbon blacks.
Patent GB-854570-A (GB)
Title: Improvements in or relating to thermocouple assemblies
Inventor: KNIGHT JAMES RICHARD
IPC: H01L35/00
Filed: 1958-03-13
Abstract: The following alloys suitable for use in thermocouples (see Group XXXVI) are referred to: platinum with up to 40% rhodium (e.g. 10 or 13%), platinum with up to 25% iridium and platinum with up to 10% molybdenum.  The percentages are by weight.
Patent GB-431082-A (GB)
Title: Improvements in and relating to bed-settees and the like
IPC: A47C17/22
Filed: 1934-03-15
Abstract: 431,082. Bedsteads convertible into seats. CAMERON, G. M., Kingsway Chair & Upholstery Works, Fairmuir Street, Dundee. March 15, 1934, No. 8150. [Class 52 (ii)] In a bed settee the head end section 1 of the jointed mattress frame is pivoted intermediate its ends to the side frames 3 and itself forms the settee back. The seat 16 is carried by links 18 from the mattress frame and connected to the settee frame by double hinges 10.
Patent GB-712240-A (GB)
Title: Improvements in or relating to apparatus for the production of pile fabric
Inventor: LANE FREDERICK HENRY
IPC: D04H11/00
Filed: 1951-04-11
Abstract: 712,240. Pile fabric-making apparatus. DUNLOP RUBBER CO., Ltd. March 13, 1952 [April 11, 1951], No. 8356/51. Class 140 In apparatus for electrostatic production of pile fabric having.upper and lower electrodes, means for passing adhesive-coated backing material in contact with the upper electrode, and means for delivering pile-forming fibres to the space between the electrodes, the upper electrode comprises spaced. conductors adapted to ensure that at the position at which the backing material leaves the first conductor and that at which the backing material meets the final conductor substantially straight line contact is obtained in a direction transversely of the direction of travel of the backing material. Backing material 26 passes from a supply roll to licking device 28 for adhesive application, and thence in contact with upper electrode 11. The electrode 11 has parallel horizontal conductor rods 20a, 20b, and hexagonal conductor beater rod 21, projecting below the plane of the lower surfaces of rods 20a, 20b, and rotated to cause vibration. of the backing material as described in Specification 704,456, which rods form the line contacts with the backing material.. Flat or curved plates 23a, 23b are also provided above the plane of contact with the backing material of adjacent pairs of conductors, to provide the requisite field strength without contacting the backing. All the plates and rods 20a, 20b, 21, 23a, 23b are connected (not shown) to one pole of generator 24, the other pole of which. is connected to the lower electrode 10. The pile fibres are fed from hopper 16 by distributing roller 18 on to driven conveyer 12 which is in contact with electrode 10. The pile fabric passes from electrode 11 through drying chamber 30 to take-up roll 35.